Patents by Inventor James Semple
James Semple has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10756580Abstract: A wireless power transfer system (1) includes a primary coil (2) for generating an oscillating electromagnetic field for wirelessly transferring power to a secondary coil. The system also includes emitting coils (6) arranged to generate an electromagnetic field for exciting a nuclear quadrupole resonance in the biological material of an animal (7) exposed to the electromagnetic field generated by the emitting coils. The system also includes detecting coils (6) for detecting the absorption and/or emission of electromagnetic radiation by and/or from the excitation of the nuclear quadrupole resonance. The system is arranged, when the detecting coils detect the absorption or emission of electromagnetic radiation, to prevent the primary coil from generating, or to cause the primary coil to reduce the amplitude of, the oscillating electromagnetic field.Type: GrantFiled: May 25, 2017Date of Patent: August 25, 2020Assignee: Oxford University Innovation LimitedInventors: Arzhang Ardavan, James Semple
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Publication number: 20190296589Abstract: A wireless power transfer system (1) includes a primary coil (2) for generating an oscillating electromagnetic field for wirelessly transferring power to a secondary coil. The system also includes emitting coils (6) arranged to generate an electromagnetic field for exciting a nuclear quadrupole resonance in the biological material of an animal (7) exposed to the electromagnetic field generated by the emitting coils. The system also includes detecting coils (6) for detecting the absorption and/or emission of electromagnetic radiation by and/or from the excitation of the nuclear quadrupole resonance. The system is arranged, when the detecting coils detect the absorption or emission of electromagnetic radiation, to prevent the primary coil from generating, or to cause the primary coil to reduce the amplitude of, the oscillating electromagnetic field.Type: ApplicationFiled: May 25, 2017Publication date: September 26, 2019Inventors: Arzhang Ardavan, James Semple
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Patent number: 9813249Abstract: A method of requesting and issuing a certificate from certification authority for use by an initiating correspondent with a registration authority is provided. The initiating correspondent makes a request for a certificate to the registration authority, and the registration authority sends the request to a certificate authority, which issues the certificate to the registration authority. The certificate is stored at a location in a directory and this location is associated with a pointer such as uniform resource locator (URL) that is derived from information contained in the certificate request. The initiating correspondent computes the location using the same information and forwards it to other corespondents. The other correspondents can then locate the certificate to authenticate the public key of the initiating correspondent.Type: GrantFiled: August 13, 2014Date of Patent: November 7, 2017Assignee: Certicom Corp.Inventors: Paul Neil Fahn, James Semple
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Publication number: 20140351580Abstract: A method of requesting and issuing a certificate from certification authority for use by an initiating correspondent with a registration authority is provided. The initiating correspondent makes a request for a certificate to the registration authority, and the registration authority sends the request to a certificate authority, which issues the certificate to the registration authority. The certificate is stored at a location in a directory and this location is associated with a pointer such as uniform resource locator (URL) that is derived from information contained in the certificate request. The initiating correspondent computes the location using the same information and forwards it to other corespondents. The other correspondents can then locate the certificate to authenticate the public key of the initiating correspondent.Type: ApplicationFiled: August 13, 2014Publication date: November 27, 2014Applicant: CERTICOM CORP.Inventors: Paul Neil FAHN, James SEMPLE
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Patent number: 8832431Abstract: A method of requesting and issuing a certificate from certification authority for use by an initiating correspondent with a registration authority is provided. The initiating correspondent makes a request for a certificate to the registration authority, and the registration authority sends the request to a certificate authority, which issues the certificate to the registration authority. The certificate is stored at a location in a directory and this location is associated with a pointer such as uniform resource locator (URL) that is derived from information contained in the certificate request. The initiating correspondent computes the location using the same information and forwards it to other corespondents. The other correspondents can then locate the certificate to authenticate the public key of the initiating correspondent.Type: GrantFiled: August 1, 2012Date of Patent: September 9, 2014Assignee: Certicom Corp.Inventors: Paul Neil Fahn, James Semple
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Patent number: 8788807Abstract: Methods and apparatus for protecting user privacy in a shared key system. According to one aspect, a user generates a derived identity based on a key and a session variable, and sends the derived identity to an application. In one embodiment, a key server may be used to receive the derived identity from the application, and return a sub-key to the application to use for encrypting communications with the user.Type: GrantFiled: January 10, 2007Date of Patent: July 22, 2014Assignee: QUALCOMM IncorporatedInventors: Adrian Escott, James Semple
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Patent number: 8726019Abstract: In a communication system in which two communication entities seek to have a private or confidential communication session, a trust relationship needs first be established. The trust relationship is based on the determination of a shared secret which in turn is generated from contextual information. The contextual information can be derived from the circumstances surrounding the communication session. For example, the contextual information can include topological information, time-based information, and transactional information. The shared secret may be self-generated or received from a third party. In either event, the shared secret may be used as key material for any cryptographic protocol used between the communication entities.Type: GrantFiled: February 10, 2006Date of Patent: May 13, 2014Assignee: QUALCOMM IncorporatedInventors: Michael Paddon, Gregory Gordon Rose, James Semple, Philip Michael Hawkes
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Patent number: 8724803Abstract: A method and apparatus for secure generation of a short-term key SK for viewing information content in a Multicast-broadcast-multimedia system are described. A short-term key is generated by a memory module residing in user equipment (UE) only when the source of the information used to generate the short-term key can be validated. A short-term key can be generated by a Broadcast Access Key (BAK) or a derivative of BAK and a changing value with a Message Authentication Code (MAC) appended to the changing value. A short-term key (SK) can also be generated by using a private key and a short-term key (SK) manager with a corresponding public key distributed to the memory module residing in the user equipment (UE), using a digital signature.Type: GrantFiled: September 1, 2004Date of Patent: May 13, 2014Assignee: QUALCOMM IncorporatedInventors: James Semple, Gregory Gordon Rose
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Patent number: 8718279Abstract: Apparatus and method for provisioning an access key used for a controlled access broadcast service is disclosed. In one aspect, a method for secure processing in a device that securely stores a secret key comprises receiving a plurality of challenges from a network, generating a plurality of ciphering keys based on the secret key and the plurality of challenges, and generating an access key based on the plurality of ciphering keys.Type: GrantFiled: June 16, 2004Date of Patent: May 6, 2014Assignee: QUALCOMM IncorporatedInventors: Gregory Gordon Rose, James Semple, Roy Franklin Quick
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Patent number: 8611536Abstract: A communications system and method of bootstrapping mobile station authentication and establishing a secure encryption key are disclosed. In one embodiment of the communications network, a distinguished random challenge is reserved for generation of a secure encryption key, wherein the distinguished random challenge is not used for authentication of a mobile station. The distinguished random challenge is stored at a mobile station's mobile equipment and used to generate a secure encryption key, and a bootstrapping function in the network uses a normal random challenge to authenticate the mobile station and the distinguished random challenge to generate the secure encryption key.Type: GrantFiled: September 2, 2005Date of Patent: December 17, 2013Assignee: QUALCOMM IncorporatedInventors: James Semple, Gregory G. Rose, Michael Paddon, Philip Michael Hawkes
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Publication number: 20130031361Abstract: A method of requesting and issuing a certificate from certification authority for use by an initiating correspondent with a registration authority is provided. The initiating correspondent makes a request for a certificate to the registration authority, and the registration authority sends the request to a certificate authority, which issues the certificate to the registration authority. The certificate is stored at a location in a directory and this location is associated with a pointer such as uniform resource locator (URL) that is derived from information contained in the certificate request. The initiating correspondent computes the location using the same information and forwards it to other corespondents. The other correspondents can then locate the certificate to authenticate the public key of the initiating correspondent.Type: ApplicationFiled: August 1, 2012Publication date: January 31, 2013Applicant: CERTICOM CORP.Inventors: Paul Neil FAHN, James SEMPLE
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Patent number: 8266425Abstract: A method of requesting and issuing a certificate from certification authority for use by an initiating correspondent with a registration authority is provided. The initiating correspondent makes a request for a certificate to the registration authority, and the registration authority sends the request to a certificate authority, which issues the certificate to the registration authority. The certificate is stored at a location in a directory and this location is associated with a pointer such as uniform resource locator (URL) that is derived from information contained in the certificate request. The initiating correspondent computes the location using the same information and forwards it to other corespondents. The other correspondents can then locate the certificate to authenticate the public key of the initiating correspondent.Type: GrantFiled: December 20, 2006Date of Patent: September 11, 2012Assignee: Certicom Corp.Inventors: Paul Neil Fahn, James Semple
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Patent number: 8260259Abstract: Methods and devices for instructing a subscriber identity module in a cellular communications network to process non-standard authentication information in a standard manner are disclosed. One embodiment of a method comprises receiving a first message authentication code (MAC) and an authentication management field (AMF) at a subscriber identity module as part of an authentication protocol, calculating a second MAC and determining whether the second MAC is equivalent to the first MAC. If the first and second MAC are not equivalent, the SIM calculates a third MAC and determines whether the first MAC is equivalent to the third MAC, and if so, the subscriber identity module processes the AMF in a predefined or standard manner.Type: GrantFiled: September 2, 2005Date of Patent: September 4, 2012Assignee: QUALCOMM IncorporatedInventors: James Semple, Gregory G. Rose, Michael Paddon, Philip Michael Hawkes
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Patent number: 8098818Abstract: A method and an apparatus for secure registration for a multicast-broadcast-multimedia system (MBMS) are disclosed. A random number is generated by a broadcast-multicast-service center (BM-SC) and broadcast to user equipment in the coverage area of a radio access network (RAN). A memory module or smart card (UICC) in the user equipment generates a radio access network key (RAK) which is a function of the random number and a key selected from the group consisting of a public land mobile network key (PK) and a broadcast access key (BAK), and then generates a temporary registration key (RGK) as a function of the RAK, a service identification number and a user identification number, for example, P-TMSI, which may be extracted by the RAN to authenticate the registration as legitimate.Type: GrantFiled: July 7, 2003Date of Patent: January 17, 2012Assignee: QUALCOMM IncorporatedInventors: Francesco Grilli, Lorenzo Casaccia, James Semple, Parag A. Agashe
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Patent number: 7966662Abstract: An authentication system is disclosed. The authentication system includes a content provider configured to distribute encrypted content, wherein the encrypted content is generated using a content key, and a client having a symmetric key and configured to store the encrypted content received from the content provider and issue a request to the content provider, wherein the request includes a cryptographic function configured to have the symmetric key and the encrypted content as input, wherein the content provider is further configured to verify the client via the request to ensure that the client has received the encrypted content.Type: GrantFiled: January 6, 2005Date of Patent: June 21, 2011Assignee: QUALCOMM IncorporatedInventors: Gregory Gordon Rose, James Semple, Roy Franklin Quick, Jr., Philip Michael Hawkes
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Patent number: 7809179Abstract: A process is provided for inspecting an absorbent article constructed from multiple components. A filtered image is produced from the absorbent article. In the image of the absorbent article, a nonlinear first edge and a second edge are identified at a location where there is a course change in contrast. A center point and centerline of the absorbent article is calculated using the position of the first edge and the second edge. A skew of the absorbent article is calculated. These known locations are utilized to define at least one additional region of the image for further analysis. A third edge and fourth edge are identified at a location where there is a fine change in contrast. The skew of the third edge and the fourth edge within the defined region is calculated and compared to known parameters for the absorbent article.Type: GrantFiled: September 6, 2006Date of Patent: October 5, 2010Assignee: The Procter & Gamble CompanyInventors: Rajesh Kumar Singh, Thomas Keith Olschner, Ian James Semple, Paul Anthony Powell, Jeremy Georges Bertin
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Patent number: 7715822Abstract: A mutual authentication method is provided for securely agreeing application-security keys with mobile terminals supporting legacy Subscriber Identity Modules (e.g., GSM SIM and CDMA2000 R-UIM, which do not support 3G AKA mechanisms). A challenge-response key exchange is implemented between a bootstrapping server function (BSF) and mobile terminal (MT). The BSF generates an authentication challenge and sends it to the MT under a server-authenticated public key mechanism. The MT receives the challenge and determines whether it originates from the BSF based on a bootstrapping server certificate. The MT formulates a response to the authentication challenge based on keys derived from the authentication challenge and a pre-shared secret key. The BSF receives the authentication response and verifies whether it originates from the MT.Type: GrantFiled: February 3, 2006Date of Patent: May 11, 2010Assignee: QUALCOMM IncorporatedInventors: James Semple, Gregory Gordon Rose, John Wallace Nasielski
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Publication number: 20070245139Abstract: A method of requesting and issuing a certificate from certification authority for use by an initiating correspondent with a registration authority is provided. The initiating correspondent makes a request for a certificate to the registration authority, and the registration authority sends the request to a certificate authority, which issues the certificate to the registration authority. The certificate is stored at a location in a directory and this location is associated with a pointer such as uniform resource locator (URL) that is derived from information contained in the certificate request. The initiating correspondent computes the location using the same information and forwards it to other corespondents. The other correspondents can then locate the certificate to authenticate the public key of the initiating correspondent.Type: ApplicationFiled: December 20, 2006Publication date: October 18, 2007Inventors: Paul Fahn, James Semple
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Publication number: 20070174613Abstract: In a communication system in which two communication entities seek to have a private or confidential communication session, a trust relationship needs first be established. The trust relationship is based on the determination of a shared secret which in turn is generated from contextual information. The contextual information can be derived from the circumstances surrounding the communication session. For example, the contextual information can include topological information, time-based information, and transactional information. The shared secret may be self-generated or received from a third party. In either event, the shared secret may be used as key material for any cryptographic protocol used between the communication entities.Type: ApplicationFiled: February 10, 2006Publication date: July 26, 2007Inventors: Michael Paddon, Gregory Rose, James Semple, Philip Hawkes
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Publication number: 20070168662Abstract: Methods and apparatus for protecting user privacy in a shared key system. According to one aspect, a user generates a derived identity based on a key and a session variable, and sends the derived identity to an application. In one embodiment, a key server may be used to receive the derived identity from the application, and return a sub-key to the application to use for encrypting communications with the user.Type: ApplicationFiled: January 10, 2007Publication date: July 19, 2007Applicant: QUALCOMM INCORPORATEDInventors: Adrian Escott, James Semple